Ring-gage.



lm/Imam #W P. U. MASCHER.

RING GAGE.

APPLICATION FILED JAN.3. 19x6.

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Patented Jan. 2, 1917.

awwwo'a PAUL U. MASCHER, OF EAST PALESTINE, OHIO.

RING-GAGE.

Specification of Letters Patent.

Patented J an. 2, 1917.

Application filed January 3, 1916. Serial No. 69,990.

To all whom it may concern:

Be it lmown that I, PAUL U. MASCHER, a citizen of the United States,residing at East Palestine, in the county of Columbiana and State ofOhio, have invented certain new and useful Improvements in Ring- Gages;and I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates generally to geometrical instruments and moreparticularly to ring gages, and has for its object the provision of adevice from which a repairer may ascertain at a glance the exact amountof metal to be cut out of a finger ring when it is desired to reduce itfrom one known size to another.

With this and other objects in view, the invention consists of certainnovel features of construction, combination and arrangement of parts aswill be hereinafter fully described and claimed.

In the accompanying drawings in which similar reference numeralsdesignate like parts throughout the several views :Figure 1 is a sideelevation of a device constructed in accordance with this invention;Fig. 2 is a plan view of the same; and Fig. 3 is a sectional view takenon the plane of the line 3-3 of Fig. 2.

Referring more particularly to the drawings, 1 represents a hollow metalrod which is circular in cross section and is tapered from one end tothe other. For convenience in handling this hollow metal rod 1 ismounted on a solid wooden or other suitable handle 2. c

The outer face of the rod 1 is provided with a scale having any desirednumber of parts, here shoWn from 1 to 13 inclusive and withsub-divisions of halves and quarters. This scale is formed by a seriesof longitudinally spaced transversely extending lines 3, the unit linesextending entirely around the rod, as may be desired. The innercircumference of any finger ring greater than the circumference of therod at 1 and less than 13 may be accurately determined by trying it uponthe rod, and another ring of the same size may be readily selected tocorrespond therewith by also fitting it upon the rod, thereby avoidingunnecessary handling of the rings.

Arranged on the outer face of the rod 1 is an additional gage composedof a series of parallel lines 4. These lines 4 intersect thetransversely extending lines 3 and are spaced apart transversely at eachend by a distance equal to the diflerence in circumference of the rod atany two adjacent unit lines. Six of these lines 4 are shown, one being azero line and the others being numbered from 1 to 5 inclusive toindicate the difference in circumference between the rod at a certainpoint and at another point a corresponding number of units away. Thus,for example, the circumference of the rod at 13 is greater than that ofthe rod at 12 by a distance equal to the distance from the zero line to1, the circumference at 13 is greater than that at 11 by a distanceequal to the distance from the zero line to 2, and so on. By thisarrangement, it may be seen that the exact amount which must be cut outof a ring to reduce it from one known size to another may be accuratelyascertained. Heretofore, this has been merely guessed at.

Various changes in form and proportion may be resorted to withoutdeparting from the spirit of this invention and hence I do not wish tolimit myself to the construction herein shown and described other thanthat set forth in the appended claim.

I claim A ring gage comprising a tapered rod circular in cross sectionand having a series of parallel spaced transverse lines extending aroundthe same, a zero line extending lengthwise of said rod, and a series ofspaced parallel lines extending lengthwise of said rod, the last namedlines being arranged also parallel to said zero line and being spacedapart by a distance equal to the difference in circumference of the rodat two adjacent transversely extending lines.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

PAUL U. MASCI-IER. Witnesses:

R. Y. STEVENSON, J. B. MCGAFFIO.

Copies of this patent may be obtained for flve cents each, by addressingthe Commissioner of Patents, Washington, D. G.

